User Interface for a Handheld Device

1. A method of operating a wireless handheld device, comprising: on receipt of a request to compose a message, displaying on a display of said wireless handheld device (i) a first recipient field of a first type for a recipient address, and (ii) a message composition field for holding message content; thereafter, upon each keystroke entry of text into said first recipient field: searching an address book for entries that match said text; displaying on said display a selection menu comprising any matching entries; and on receipt of an input corresponding to a selection of one of said matching entries, (a) populating said first recipient field based on said selected one of said matching entries, (b) ceasing to display said selection menu on said display and, (c) altering said display to add a second recipient field of said first type for a second recipient address to said display so that said second recipient field is displayed with said first populated recipient field and said message composition field.

2. The method of claim 1 further comprising: thereafter, upon each keystroke entry of text to said second recipient field: searching said address book for second entries that match text input to said second recipient field; displaying a second selection menu comprising any said second entries; on receipt of an input corresponding to a selection of one of said second entries, (a) populating said second recipient field based on said selection of one of said second entries, (b) ceasing to display said selection menu on said display and, (c) altering said display to add a third recipient field for a third recipient address of said first type to said display so that said third recipient field is displayed with said first recipient field, said second recipient field, and said message composition field.

3. The method of claim 1 wherein said message is to be sent with a given messaging service.

4. The method of claim 3 wherein said address book entry is a recipient name associated with an address according to a protocol of said messaging service.

5. The method of claim 3 further comprising, upon receipt of said input, where said selection is an address book entry associated with a recipient name not associated with an address according to a protocol of said messaging service, generating a warning.

6. The method of claim 3 wherein said first recipient field is displayed with a first label and said second recipient field is displayed with a second label, said second label being identical to said first label.

7. The method of claim 6 wherein said messaging service is an e-mail service.

8. The method of claim 7 wherein each said recipient field of said first type is a “To:” field.

9. The method of claim 7 wherein said first label and said second label indicate a “Cc:” field.

10. The method of claim 7 wherein said first label and said second label indicate a “Bcc:” field.

11. The method of claim 3 wherein said messaging service is a short messaging service.

12. The method of claim 3 wherein said messaging service is an instant messaging service.

13. The method of claim 3 wherein said messaging service is a personal identification number (PIN) messaging service.

14. The method of claim 3 wherein said messaging service is a multi-media messaging service.

15. The method of claim 3 further comprising, upon receipt of a request to send said message, prior to sending, removing said second recipient field, if no text has been entered to said second recipient field.

16. A handheld device comprising: a persistent store; a keyboard for text entry; a display; a wireless transmitter; a controller operable to: upon receipt of a request to compose a message to be sent with a messaging service, display on said display (i) a first recipient field for a recipient address of a first type, and (ii) a message composition field for holding message content; thereafter, upon each keystroke entry of text into said first recipient field: search an address book for entries that match said text; display on said display a selection menu comprising any matching entries; and on receipt of an input corresponding to a selection of one of said matching entries, (a) populate said first recipient field based on said selected one of said matching entries, (b) cease to display said selection menu on said display and, (c) alter said display to add a second recipient field of said first type for a second recipient address to said display so that said second recipient field is displayed with said first populated recipient field and said message composition field.

17. The device of claim 16 wherein said controller is further operable to: thereafter, upon each keystroke entry of text to said second recipient field: search said address book for second entries that match text input to said second recipient field; display a second selection menu comprising any said second entries; on receipt of an input corresponding to a selection of one of said second entries, (a) populate said second recipient field based on said selection of one of said second entries, (b) cease to display said selection menu on said display and, (c) altering said display to add a third recipient field for a third recipient address of said first type to said display so that said third recipient field is displayed with said first recipient field, said second recipient field, and said message composition field.

18. The device of claim 16 wherein said controller is further operable to: display said first recipient field with a first label and said second recipient field with a second label, said second label being identical to said first label.

19. The device of claim 18 wherein said controller is operable to send said message with an e-mail service.

20. The device of claim 16 wherein said controller is further operable to: upon receipt of a request to send said message, prior to sending, remove said second recipient field, if no text has been entered to said second recipient field.

21. The device of claim 19 wherein each said recipient field of said first type is a “To:” field.